- Telegram is usually non-free software. The FDroid version is free, but always a bit older, because they release the source code with a delay- Telegram's server code is non-free and it uses homebrew cryptography- Chats are not end-2-end encrypted by default, group chats are never end-2-end encrypted- Telegram is running on centralised infrastructure that is easy to block or wiretap- Authorities have been able to "hack" themselves into group chats at least since 2016

chaos.social - because anarchy is much more fun with friends.
chaos.social is a small Mastodon instance for and by the Chaos community surrounding the Chaos Computer Club.
We provide a small community space - Be excellent to each other, and have a look at what that means around here.
Follow @ordnung for low-traffic instance-related updates.
The primary instance languages are German and English.